Steam and hot-water furnace.



J. GALLICOTT. STEAM AND HOT WATER FURNACE.

v APPLICATION FILED JULYZQ, 1911.

Patented Oct. 22, 1912.

WZZneSses.

UNITED STATES PATENT oE IcE.

JOHN GADLIGOTT, OF BRADFORD, ONTARI 0, CANADA, ASSIGNOIt OF ONE-HALF TO ANDREW T. HOWES AND ONE-HALE TO GEORGE BANNER/MAN, BOTH 0F BRADFORD,

ONTARIO, CANADA.

STEAM AND HOT-WATER FURNACE.

Specification of Letters Patent.

Patented Oct. 22,1912.

Application filed July 29, 1911. Serial No. 641,219.

To all whom 'it mag concern:

Be it known that I, JOHN CALLIcoTT, a subject of the King of GreatBritain, and resident of the town of Bradford, in the Province of Ontario, in the Dominion of Canada, have invented certain new and useful Improvements in Steam. and Hot-Water Furnaces, of which the'following is a full specification.

The invention relates to improvements in steam and hot water furnaces as described in the present specification, and illustrated in the accompanying drawings that form part of the same.

The invention consists essentially in the novel arrangement and construction of parts, whereby a furnace casing has the headers of the water tube connect-ions arranged therein, one near the bottom of the back wall, and the other supported near the upper part of the front wall, and connected by a plurality of vertical and horizontal pipes parallelly arranged in successive steps producer, and which also by reason of its construction, greatly assists in the combustion of all smoke and flue gases.

In the drawings the figure is a perspective View of the invention of the furnace, with one side wall removed therefrom.

Like numerals of reference indicate corresponding parts in thedrawing.

Referring to the drawings, lis the furnace comprising the walls 2 which are conterial. a

3 is a sheet metal cover forming the top of the furnace. V

4 are the shaker grates, common to furnaces of this kind, and operated by the lever 5.

other suitable ma- 6 is the ash pit of the furnace.

7 are cast iron headers, although it must be thoroughly understood, that these headers may be made of any suitable material. The headers are supported in the interior of the'furnace, by the brackets 8, one near the bottom of the rear wall just above the ash pit, and the other near thetop of the front wall.

9 are the water tubes, parallelly arranged vertical are connected at the bottom thereof to the header at the'rearof the furnace.

11 are horizontal tubes leadingfrom the vertical tubes 10, four tubes or more leading from each vertical tube. These tubes are parallelly arranged one above the other, and are connected together in successive steps by'means of the elbows 12, short lengths of pipe 13, and the Ts 14, the uppermost pipe entering the header, situated near the top of the front wall.

15 is a'baiile plate extending over the fire box area of the furnace, beneath the second row of lateral pipes, the short lengths of comprising the pipe 13 passing through prepared orifices 16 in the baflie plate '15.

17 are slots in the rear end of the baflie plate, whereby the baffle plate fits around the vertical tubes. This baflie plate does not fit against the rear or side walls, but a a small air space is left therebetween, so that the heat from the fire may readily ascend to the top of the furnace. This baffle plate is for the purpose of bafliing the smoke and retaining it in suspension over the fire where it is consmned, and also to distribute the heat evenly throughout the furnace.

18 is the smoke stack, the bottom of which projects some distance below'the sheet metal top of the furnace, whereby the heat and gas not finding a ready exit to the atmosphere, curls downward carrying any smoke that might pass over the front end of the baflie plate, back around the sides of the bafiie plate into the fire, where it is quickly consumed.

tubes 10, which the water column, and 22 is the steam gage.

19 is an ordinary safety valve connected directly to the top of the forward header through an orifice in the sheet steel top of the furnace.

20 is a water column situated at one side of the boiler near the top and front end thereof. of thewater column is connected to the secondrowof lateral tubes from the top.

The pipe leading to the bottom 21 are the ordinary gage-cocks secured to 28 is a pipe leading from the safety valve 19 to the pipe connected to the top of the water column, and which also leads to the steam gage through the siphon 22.

2a is a pipe leading from the water tank" or other water supply, through the rear wall, and intothe header situated near the bottom thereof.

25 is a valve for regulating the flow of the water through the supply pipe 24.

26 is a blow ofi pipe connected to the bottom of the rear header, and is for the purpose of emptying the boiler, and removing the sediment therefrom when desired. This 3 blow off pipe is provided with a valve 27.

The'pipes 11 are inclined slightly upward toward the front header, thereby assisting.

from, when the blow off pipe is open.

. in removing the water and sediment there- 28 is a drip pipe leading from the bottom of the header, at the front of the furnace, to

the blow off pipe adjacent to the header at 1 the rear end of the furnace. The drip pipe I 28 acts as an equalizer and also assists materially in cleaning the forward tank of the I furnace, and provides a steam drip when the furnace is used as a steam producer, for as it will be readily understood, when the furnace is used as a steam producer, the. tubes of the furnace are only partially filled with water, the steam rising in the upper tubes and into the forward tank.

29 are the feedpipes two in number, one from each end of the header situated at the front of the furnace. These feed pipes are for the purpose of conveying the hot water or steam to the radiators, or other apparatus.

30 are the return pipes leading from the radiators to either end of the header at the rear end of the furnace, and convey the hot water back to the furnace, after the said hot water has passed through the radiators.

It may be mentioned here, that the front of the furnace is covered by sheet metal,

which is divided up into three sections, riveted together.

31 is the ash pit door which is situated in the lower section of the sheet metal front.

32 is the furnace door which is provided with a circular damper 33, and is situated in the central section of the sheet metal front. 1

34 are slide or hinged doors situated in the top section of the furnace front, and provide ready access to the top of the baflle plate 15, and the upper tubes of the furnace, sothat any dirt collecting thereon may be readily removed.

It may be mentioned here, that the header or tank situated in the .forward .end of. the

the furnace wall, insteadof inside, in which case, the horizontal tubes leading thereto will pass through prepared orifices in the said front wall.

furnace may be supported on. the outsideof This furnace has been found veryeflicient as a'hot water heater and steam producer.

The furnace may be made in all sizes, and

its efficiency as a heater, and its power qualities may be considerably increased, by increasing the size of the cast headers and upper horizontal tubes extending from the upper ends of said vertical tubes to the said upper header, a plurality of horizontal tubes of vario-uslengths extending from said vertical tubes and paralleling said upper horizontal tubes, and vertical coupler tubes connecting the outer end of each of said horizontal tubes with the horizontal tube immediately thereabove.

2. In a device of the class described, the

combination of a furnace casing, a lower header, an upper header, vertical tubes eX- tending upwardly from said lower header,

a baffle plate horizontally arranged interme- "1 diate of the height of said vertical tubes and spaced apart from the side walls of'the said furnace casing, upper horizontal tubeseX- tending from the upper ends of said vertical.

tubes to the said upper header, a plurality of horizontal tubes of various lengths extending from said vertical tubes and paral- 1 leling said upper horizontal tubes, and ver tical coupler tubes connecting the outer end of each of said horizontal tubes with the horizontal tube immediately ther'eabove' 3. In a device of the classdescribed, the

combination of a furnace casing, a lower header, an upper header, vertical tub-es eX- tending upwardly from said lower header, upper horizontal tubes extending from the .120 i upper ends of said vertical tubes to the said upper header, a plurality of horizontal tubes extending from said vertical tubes, a series of vertical tubes connecting theouter ends of said horizontal tubes with the horizontal tubes immediately thereabove, a bafiieplate horizontally arranged across the said casing of Ontario, in the Dominion of Canada, this intermediai e of the height of said vertical 1 1th day of March 1911. 7 tubes and orming upper and lower eham- V bers in said casing and a smoke stack eX- JOHN OALLICOIT' 5 tending through the top of said casing in Witnesses:

proximity to said baflie plate. M. KIDD,

Signed at city of Toronto in the Province C. J. CASE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

